Liquid Ionic Iodine Ionic Iodine is a rich, concentrated liquid dietary supplement that provides 225 mcg of iodine from potassium iodide per serving, plus over 72 ionic trace minerals from ConcenTrace. Iodine is an important mineral that is used in the body in several different ways. It may help support the following: healthy thyroid function, ATP production, hormone production, central nervous system function, immune function, and skin health.